20,596 research outputs found
Jin gang shi na mi ke li yu ren lei xi bao de xiang hu zuo yong
No full textWang, Yanhuan = 金剛石納米顆粒與人類細胞的相互作用 / 王彥歡.Thesis M.Phil. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 53-60).Abstracts also in Chinese.Title from PDF title page (viewed on 10, November, 2016).Wang, Yanhuan = Jin gang shi na mi ke li yu ren lei xi bao de xiang hu zuo yong / Wang Yanhuan
Primula mianyangensis (Primulaceae), a new species from Sichuan, China
No full textWu, Xing, Xu, Yuan, Hu, Chi-Ming, Hao, Gang (2013): Primula mianyangensis (Primulaceae), a new species from Sichuan, China. Phytotaxa 131 (1): 49-52, DOI: 10.11646/phytotaxa.131.1.9, URL: https://www.mendeley.com/catalogue/880c21cf-8fdf-32f3-b9c0-ec1ab8db964d
Crossodonthina langshanensis Hu & Jiang & Jiang 2019, sp. nov.
No full textCrossodonthina langshanensis sp. nov. Figures 1, 3, 5, 7–9, 15, 17, 19, Tables 1–3 Type material. Holotype: female, China, Hunan, Xinning county, Langshan National Geopark. Coordinates: 26.277054N, 110.730618E, alt. 520m, in forest, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 30.iv.2018 (J2018043002). Paratypes: 2 females, China, Hunan, Xinning county, Langshan National Geopark. Coordinates: 26.276580N, 110.729240E, alt. 470m, in forest, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 30.iv.2018 (J2018043003); 3 juvenile, Guangxi, Ziyuan county, Langshan National Geopark, Coordinates: 26.276824N, 110.730528E, alt. 510m, nearby the entrance of the Park, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 29.iv.2018 (J2018042901). Type materials are housed in the Key Laboratory of Zoology, Hunan University of Arts and Science (HUAS), Changde, Hunan Province, China. Othermaterial. 2females, China, Hunan, Xinningcounty,LangshanNationalGeopark. Coordinates: 26.276986N, 110.736902E, alt. 527m, in forest, leg. Ji-Gang Jiang, Ya-Hui Hu, Wei Hu, 25.vii.2019 (J2019072502). Diagnosis. 2+2 black eyes on head; labral chaetotaxy as 2/4, 2; cephalic chaeta O present; tubercle Dl on Th. II with 3 chaetae (2+s); mandible with 2 prominent basal teeth and 2 fringed rami of quite different sizes; maxilla with marginal filaments on outer lamella; tubercle Di on Abd. V separated; Description. Body length: holotype 2.4 mm, two paratypes 2.3–2.4 mm, three juveniles 1.0– 1.1mm. Color. Red while living (Fig. 1) and white in alcohol (Fig. 3). Chaetal morphology (Fig. 5). Dorsal ordinary chaetae of five types: Ml (Fig. 5 a–b), Mc (Fig. 5c), Mcc (Fig. 5d), me (Fig. 5 e–f) and mi (Fig. 5h). S-chaetae on terga thin, smooth, shorter than Ml and longer than Mc (Fig. 5g). Head. Eyes 2+2, black. Antenna 4-segmented (Fig. 15). Ant. I with 9 chaetae. Ant. II with 11 chaetae. Ant. III and IV dorsally fused. Dorsal sensory guard chaeta (sgd) on Ant. III not migrated distally, two rods exposed in separate pit. Ant. IV dorsally with 8 slightly thickened and blunt sensilla, apical bulb trilobed. sensory organite (or) present. Ventral chaetotaxy of Ant. IV: ap with 8 bs and 3 miA, ca with 2 bs and 3 miA, cm with 3 bs and 1 miA, cp without miA. On ventral side of Ant. III, Vi, Vc, Ve with 3, 4, 4 chaetae respectively. Buccal cone moderately developed. Labrum truncated, chaetal formula as 2/4, 2 (adult) or 4/4, 2 (juvenile). Labium with 11 chaetae and 2 x (Fig. 17). Mandible complicated (Fig. 8), consisting of 2 rami, 2 definite teeth and some spine-like chaetae. Small ramus consisting of one spine-like chaeta and 7–8 slender chaetae, large ramus developed, with 2 rows of marginal chaetae, 4 strong and spine-like chaetae, marginal chaetae on ramus simple, bifurcated or tri-furcated, about 9-12 spine-like chaetae present on the central area of basal part of the large ramus. The longer ramus about 10 times as long as the small one. Maxilla consisting of two lamellae, the inner lamella much shorter than the outer one, with two minute apical teeth, the outer one with marginal filaments on inner side (Fig. 9). On ventral side of head, group Vi with 6+6 chaetae, groups Vea, Vem and Vep with 4, 3 and 2 chaetae respectively. Dorsal tubercles and chaetotaxy of head as in Tab. 1. and Fig. 7. Dorsal central area with 6 separate tubercles; one tubercle Cl, 2 An, one Fr and 2 Oc, chaeta O absent. Dorsal posterior area with 4 separate tubercles: 2 Di and 2 De. Line of chaetae Di2–De2 crosses line Di1– De1 on head (cross-type, Deharveng 1983). Dorsal lateral area with 1 fused tubercle (Dl+L+So). Thorax (Table 2 & Fig. 7). Th. I with 3+3 tubercles (Di, De, Dl). Th. II and Th. III with 4+4 tubercles respectively, ms on tubercle Dl of Th. II present (its form as in Fig. 5i). Chaetotaxy of thorax and legs as in Table 2. Unguis with a basal inner tooth, unguiculus absent. Chaeta M present on tibiotarsus. Abdomen (Table 2 & Fig. 7). Abd. I–IV respectively with 4+4 tubercles. Abd. V dorsally with 2+2 tubercles, two tubercles Di close to each other, but not fused together, tubercle De fused to Dl, tubercle L present on ventral side. Abd. VI with 1 tubercle on each side, no cryptopygy. VT with 4+4 chaetae. Furcular remnant with 3-4 chaetae (Fig. 19). Etymology. The name of the species derives from the locality where it was collected. Ecology. Among decayed leaves in forest. Remarks. So far, 12 species of genus Crossodonthina were reported worldwide, 11 species were from Asia and only one from Oceania, seven species were reported from China (Jiang & Zhang, 2012). In genus Crossodonthina, three species have 2+2 eyes, they are C. bidentata, C. hainana and C. montana, the new species is the fourth one with 2+2 eyes. In general appearance, Crossodonthina langshanensis sp. nov. strongly resembles Chinese species C. bidentata (Luo & Chen, 2009) in the number of mandible basal teeth, the arrangement of body tubercles, the presence of chaeta O of tubercle Fr, the number of chaetae on VT, and the presence of inner tooth on claw. However, these species can be distinguished by the following features: structure of mandible (in C. langshanensis with two fringed rami, in C. bidentata with three fringed rami), structure of maxilla (in C. langshanensis outer lamella fringed, in C. bidentate outer lamella not fringed), whether the tubercle Di fused on Abd. V or not (in C. langshanensis not fused, in C. bidentate fused), the labral chaeta formula (in C. langshanensis 2/4, 2, in C. bidentata 2/5, 2), number of chaetae (besides of ms) on tubercles Dl of Th. II (in C. langshanensis 3, in C. bidentata 4). The new species is also similar to the 2+2-eyed Chinese species C. montana (Lee & Kim, 1990) and C. hainana (Xiong et al., 2005) in the arrangement of body tubercles, the presence of chaeta O of tubercle Fr, the separate tubercle Di of Abd. V and the presence of 4+4 chaetae on VT. The new species can be separated from the above species by the characters listed in Table 3.Published as part of Hu, Ya-Hui, Jiang, Cheng & Jiang, Ji-Gang, 2019, Two new species of Lobellini from Central-South China (Collembola Neanuridae), pp. 77-89 in Zootaxa 4712 (1) on pages 78-82, DOI: 10.11646/zootaxa.4712.1.5, http://zenodo.org/record/358686
Time-lapse thiol-acrylate polymerization using a pH clock reaction
No full textA time-lapse polymerization exhibits a programmable time between the mixing of the reagents and the onset of polymerization. A clock reaction demonstrates an abrupt appearance of products after a period of time after mixing of the reactants. SEM images were obtained with a Jeol Scanning Electron Microscope. FTIR spectra were measured on a Bruker Tensor 27 FTIR spectrometer. When thiolacrylate drops were dispersed in the aqueous solutions of formaldehyde and bisulfltesulflte, a twophase system formed. 27 FTIR spectrometer. Particles sizes were measured with a Nikon Eclipse SOi microscope and Nikon Digital Sight DSFll connected to a computer. The increase in pH catalyzes the addition of thiols to acrylates at the interface of the drops. Although a formaldehydebased system would not have practical uses, the system serves as a proof of concept for an approach that could be useful for time-lapse curing of adhesives and coatings
Do non-motorists understand the traffic safety laws protecting them? Results from a Chinese survey
No full textThe government of Nanjing, China, has issued several traffic laws to protect non-motorists (i.e., pedestrians, ebike riders, cyclists). In reality, however, many non-motorists are unfamiliar with these laws, which impairs the effectiveness of laws. On this background, this study investigates road users' knowledge on various traffic safety laws protecting non-motorists. An online survey was conducted to collect road users' basic information and their subjective and objective knowledge of the laws. Then, A latent class analysis model is employed to distinguish between drivers and non-motorists. Furthermore, we explore the gaps between road users' subjective and objective knowledge, and the knowledge discrepancies between different road users. Subsequently, ordered logit models are developed to identify the influencing factors of road users' knowledge levels. Finally, text network analysis is used to assess respondent's comments and suggestions. The results indicate that drivers are more knowledgeable about laws compared with non-motorists. Moreover, some road users have a high level of subjective knowledge but a low level of objective knowledge regarding some laws (e.g., yielding laws). Furthermore, some factors, "group membership" and "reading-news behavior", significantly affect both subjective and objective knowledge. "Social norm" and "perceived behavioral control" could only affect subjective knowledge, while "perceptions on fine penalty" could influence objective knowledge. Besides, respondents' positive comments are associated with their perceived benefits from the laws, while the negative comments and suggestions mainly concern non-motorist violators and knowledge discrepancies among different road users. Finally, we provide several targeted suggestions to facilitate the promotion and implementation of traffic safety laws.
Performance Evaluation of Distributed-Antenna Communications Systems Using Beam-Hopping
No full textDigital beamforming (DBF) techniques are capable of improving the performance of communications systems significantly. However, if the transmitted signals are conflicted with strong interference, especially, in the direction of the transmitted beams , these directional jamming signals will severely degrade the system performance. In order to efficiently mitigate the interference of the directional jammers, in this contribution a beam-hopping (BH) communications scheme is proposed. In the proposed BH communications scheme, only one pair of the beams is used for transmission and it hops from one to the next according to an assigned BH pattern. In this contribution a range of expressions in terms of the average SINR performance have been derived, when both the uplink and downlink are considered. The average SINR performance of the proposed BH scheme and that of the conventional single-beam (SB) as well as multiple-beam (MB) assisted beam-processing schemes have been investigated. Our analysis and results show that the proposed BH scheme is capable of efficiently combating the directional jamming, with the aid of utilizing the directional gain of the beams generated by both the transmitter and the receiver. Furthermore, the BH scheme is capable of reducing the intercept probability of the communications. Therefore, the proposed BH scheme is suitable for communications, when several distributed antenna arrays are available around a mobile
FIGURES 15–16. Ant. I–IV in Two new species of Lobellini from Central-South China (Collembola Neanuridae)
No full textFIGURES 15–16. Ant. I–IV: 15 Crossodonthina langshanensis sp. nov., 16 Lobellina gladius sp. nov.Published as part of Hu, Ya-Hui, Jiang, Cheng & Jiang, Ji-Gang, 2019, Two new species of Lobellini from Central-South China (Collembola Neanuridae), pp. 77-89 in Zootaxa 4712 (1) on page 86, DOI: 10.11646/zootaxa.4712.1.5, http://zenodo.org/record/358686
Observations on limit equilibrium-based slope reliability problems with inclined weak seams
No full text10.1061/(ASCE)EM.1943-7889.0000160Journal of Engineering Mechanics136101220-123
Lobellina gladius Hu & Jiang & Jiang 2019, sp. nov.
No full textLobellina gladius sp. nov. Figures 2, 4, 6, 10–14, 16, 18, 20, Tables 4–5 Type material. Holotype: male, China, Hunan, Xinning county, Langshan National Geopark. Coordinates: 26.273767N, 110.732951E, alt. 770m, in forest of bamboo, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 29.iv.2018. Paratypes: 5 females and 2 juveniles, about 30 specimens in alcohol, the same data as holotype, collection number as J2018042904. One female, subadult, and 4 juvenile, Guangxi, Ziyuan county, Langshan National Geopark. Coordinates: 26.274416N, 110.732011E, alt. 685m, in forest of bamboo, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 29.iv.2018 (J2018042903). Female and male, Guangxi, Ziyuan county, Langshan National Geopark. Coordinates: 26.276824N, 110.730528E, alt. 510m, nearby the entrance of the Park, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 29.iv.2018 (J2018042901). One male, Hunan, Xinning county, Shunhuangshang National Nature Reserve, Coordinates: 26.450028N, 111.014716E, alt. 930m, in forest, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 1.v.2018 (J2018050102). Type materials are housed in the Key Laboratory of Zoology, Hunan University of Arts and Science (HUAS), Changde, Hunan Province, China. Diagnosis. Three pigmented eyes on head, mandible with six teeth, cephalic chaeta O present and including in tubercle Fr, cephalic tubercle Di not fused, non-cross type chaetotaxy on posterior area of head, cephalic lateral tubercle Dl, L and So independent respectively, Ant. I with 9 chaetae, Th. I with 4+4 tubercles, VT with 6–8 (usually 7) chaetae. Description. Body length: holotype, male, 4.0 mm. Usually, males: 4.0– 4.4 mm, females: 3.5–4.8 mm, juveniles: 1.5–3.5 mm. Body color. Red while living (Fig. 2) and white in alcohol (Fig. 4). Chaetal morphology (Fig. 6). Dorsal ordinary chaetae of four types: Ml, Mc, Mcc and me. Macrochaetae Ml long, sheathed, smooth and with blunt tip, gladius shaped (Fig. 6j), some Ml not sheathed and with pointed tip, such as F chaetae on head (Fig.6k) and macrochaetae on Abd. VI (Fig. 6l). Macrochaetae Mc similar to Ml morphologically, but shorter (Fig. 6 m–n). Macrochaetae Mcc morphologically similar to Mc and shorter than Mc (Fig. 6o). Mesochaetae similar to ventral chaetae, thin, smooth, and pointed, with various length (Fig. 6 p–r, t). S-chaetae on terga thin, smooth, equal to Mc and longer than Mcc (Fig. 6s). Head (Table 4, Fig. 10). Eyes 3+3, black (Fig. 11). Antenna 4-segmented (Fig. 16). Ant. I with 9 Chaetae. Ant. II with 9–11 Chaetae. Ant. III dorsally fused to Ant. IV. Two guard chaetae sgd and sgv present. Two short rods exposed in separate pit. Ant. IV dorsally with 8 thickened and curved sensilla, apical bulb trilobed. sensory organite (or) present. Ventral chaetotaxy of Ant. IV: ap with 7 bs and 3 miA, ca with 3 bs and 1 miA, cm with 2 bs and 2 miA, cp with 1 miA. On ventral side of Ant. III, Vi, Vc, Ve respectively with 3, 5, 4 chaetae. Buccal cone weakly developed, labrum truncated, chaetal formula as 0/2, 2. Mandible with four apical teeth, one curved middle tooth and one basal tooth (Fig. 12). Maxilla crochet form (Fig. 13). Labium with 11 chaetae and no x (Fig.18). Group Vi with 6+6 chaetae (Fig.18). Groups Vea, Vem and Vep with 5, 2 and 2 chaetae respectively. Dorsal chaetotaxy of head as in Table 4. and Fig. 10. Dorsal central area with 6 separate tubercles: 1 tubercle Cl, 2 An, 1 Fr and 2 Oc. Dorsal posterior area with 4 separate tubercles: 2 Di and 2 De. Line of chaetae Di2–De2 not crosses line Di1– De1 on head (non-cross type, Deharveng, 1983). Dorsal lateral area with 3 separate tubercles: Dl, L and So. Thorax (Table 5 & Fig. 10). Th. I with 4+4 tubercles (Di, De, Dl and L). Th. II and Th. III with 4+4 tubercles respectively. Chaetotaxy of thorax and legs as in Table 2. Unguis with a basal inner tooth, unguiculus absent. Chaeta M present on tibiotarsus. Abdomen (Table 5 & Fig. 10). Abd.I–IV respectively with 4+4 tubercles. Abd. V dorsally with 3+3 tubercles, two tubercles Di separate from each other, tubercle De separate from Dl, tubercle L present, on ventral side. Abd. VI with 1 tubercle on each side. VT with 7+7 chaetae, sometimes 6+6 or 8+8. Furcular remnant with 4 chaetae (Fig. 20). Etymology. The name of the species derives from the “ gladius ” shape of its macrochaetae. Remarks. The new species can be separated from known species by the following characters: Th. I with 4+4 tubercles; tubercle Di with 3 chaetae on Abd. I–III respectively, VT with 6–8 chaetae (usually 7); non-crossed type chaetae on cephalic posterior area. Including the new species, sixteen species of genus Lobellina are known worldwide. Seven of them have O chaeta on cephalic tubercle Fr, of which, 4 with chaeta O free from the tubercle, and three species, i.e. L. nanjingensis, L.fusa and L. gladius sp. nov. with chaeta O included in tubercle Fr. The new species can be easily differentiated from the other two species of the last group by the following key.Published as part of Hu, Ya-Hui, Jiang, Cheng & Jiang, Ji-Gang, 2019, Two new species of Lobellini from Central-South China (Collembola Neanuridae), pp. 77-89 in Zootaxa 4712 (1) on pages 83-88, DOI: 10.11646/zootaxa.4712.1.5, http://zenodo.org/record/358686
FIGURES 8–9 in Two new species of Lobellini from Central-South China (Collembola Neanuridae)
No full textFIGURES 8–9. Crossodonthina langshanensis sp. nov. 8 mandible, 9 maxilla.Published as part of Hu, Ya-Hui, Jiang, Cheng & Jiang, Ji-Gang, 2019, Two new species of Lobellini from Central-South China (Collembola Neanuridae), pp. 77-89 in Zootaxa 4712 (1) on page 83, DOI: 10.11646/zootaxa.4712.1.5, http://zenodo.org/record/358686
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